Study and practice Biology past questions with answers and detailed explanations. Then test your knowledge using our interactive CBT practice platform and prepare confidently for your upcoming examinations.
Exo-erythrocytic phase of the life cycle of malaria parasite occurs in the
Aliver of humans
Breticuloendothelial cells of humans
CMalphigian tubules of mosquito
Dbrain of humans
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Question 12
jamb2011
Which of the following instruments is used to measure relative humidity?
AHydrometer
BThermometer
CHygrometer
DAnemometer
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Question 13
jamb2011
The vector of the malaria parasite is
Afemale Aedes mosquito
Bfemale Anopheles mosquito
Cmale Culex mosquito
Dfemale Culex mosquito
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Question 14
jamb2011
The interaction of a community of organisms with its abiotic environment constitutes
Aniche
Ba food chain
Can ecosystem
Da mirohabitat
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Question 15
jamb2011
Which of the following is a feature of the population pyramid of a developing country?
Along lifespan
Blow birth rate
Clow death rate
Dshort lifespan
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Question 16
jamb2011
An example of a filter -feeding animal is
Ashark
Bbutterfly
Cwhale
Dmosquito
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Question 17
jamb2011
In an experiment to determine the percentage of humus and water in a soil sample, the following results were obtained
Weight of the evaporating basin al>
Weight of basin and soil = 101.5g
Weight after drying the soil in the oven = 99.0g
Weight of basin and roasted soil = 95.5g
The percentage of humus in the soil sample is
A16.7%
B17.6%
C26.7%
D16.2%
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Question 18
jamb2011
In nature, plants and animals are perpetually engaged in mutualism because
Athey are rivals
Ball animals rely on food produced by plants
Cthey utilize respiratory wastes of each other
Dthey are neighbours
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Question 19
jamb2011
The type of asexual reproduction that is common to both Paramecium and protists is
Abudding
Bsporulation
Cfragmentation
Dfission
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Question 20
jamb2011
The sequence of the one-way gaseous exchange mechanism in a fish is
Aoperculum → gills → mouth
Bgills → operculum → mouth
Cmouth → operculum → gils
Dmouth → gills → operculum
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Question 21
jamb2011
Which of the following organs regulates the levels of water, salts , hydrogen ions and urea in the mammalian blood?
ALiver
BKidney
CBladder
DColon
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Question 22
jamb2011
The vascular tissues in higher plants are responsible for
Athe movement of food and water
Bsuction pressure
Ctranspiration pull
Dthe transport of gases and water
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Question 23
jamb2011
The movement response of a cockroach away from a light source can be described as
Apositive phototaxism
Bnegative phototaxism
Cnegative phototropism
Dpositive phototropism
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Question 24
jamb2011
The path followed by air as it passes through the lungs in mammals is
Atrachea → bronchi → bronchioles → alveoli
Bbronchi → trachea → alveoli → bronchioles
Ctrachea → bronchioles → alveoli
Dbronchioles → alveoli → bronchi →trachea
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Question 25
jamb2011
The part of the mammalian ear responsible for the maintenance of balance is the
Acochlea
Bpinna
Cperilymph
Dvestibular system
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Question 26
jamb2011
Use the following information to answer the question below.
I. Test tube containing cane sugar and water . ll. Test tube containing cane sugar and diluted acid. III. Test tube containing cane sugar and its degrading enzyme .
The enzyme involved in the hydrolysis is
Arennin
Berepsin
Csucrase
Dmaltase
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Question 27
jamb2011
Use the following information to answer the question below.
I. Test tube containing cane sugar and water . ll. Test tube containing cane sugar and diluted acid. III. Test tube containing cane sugar and its degrading enzyme .
In which of the test tubes will glucose be detected after complete hydrolysis?
Al and ll only
Bll and lll only
Cl only
Dl, ll and lll
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Question 28
jamb2011
I. Parasitism → Sundew. ll. Autotrophism →Amoeba. III. Saprophytism → Alga. IV Heterotrophism → Agama.
Which of the above modes of nutrition is correctly matched with the organism that exhibits it?
All
Blll
ClV
Dl
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Question 29
jamb2011
In mammals, the exchange of nutrients and metabolic products occurs in the
Alungs
Boesophagus
Ctrachea
Dlymph
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Question 30
jamb2011
The ability of living organism to detect and respond to changes in the environment is referred to as
